When my sister saw the converted room she said that she liked it, though she just might end up sleeping rather than working! lol. At first I thought the same thing, too, and that's why I was a bit hesitant about putting a bed in that room. However, I believe that if you're really serious about what you're working on, then you wouldn't dare fall asleep!
We had other choices for the different types of bed which might fit the room, and we are really seriously considering them all. The room isn't that big, so if possible the bed should also serve as a storage area, too. And of course, the price should be affordable, too! :)